All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=750853

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=ddd3c0ce64156f1608d3af4af81edc7096c6e7d4992ba01b75bd7f8d87bc6d5c


Bot(s) for this bug's original alert(s):

chromium-rel-mac11

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8972521375907460304

=== BISECT JOB RESULTS ===
Perf regression found with culprit

Suspected Commit
  Author : Michael Hablich
  Commit : 9bac201e0e32f198064a10c3032dbd839e8e8efd
  Date   : Thu Jul 27 07:10:02 2017
  Subject: Version 6.2.52.1 (cherry-pick)

Bisect Details
  Configuration: mac_10_11_perf_bisect
  Benchmark    : system_health.common_desktop
  Metric       : cpu_time_percentage_avg/load_media/load_media_9gag
  Change       : 4.54% | 0.357451631475 -> 0.373676027131

Revision                           Result                      N
chromium@489881                    0.357452 +- 0.00892186      6      good
chromium@489890                    0.360544 +- 0.021326        9      good
chromium@489894                    0.358708 +- 0.00296739      6      good
chromium@489896                    0.361116 +- 0.0150634       9      good
chromium@489897                    0.360884 +- 0.00455124      6      good
chromium@489897,v8@9bac201e0e      0.375019 +- 0.00442513      6      bad       <--
chromium@489898                    0.380687 +- 0.0306774       6      bad
chromium@489915                    0.373676 +- 0.0122584       6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=release --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests --story-filter=load.media.9gag system_health.common_desktop

More information on addressing performance regressions:
  http://g.co/ChromePerformanceRegressions

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8972521375907460304


For feedback, file a bug with component Speed>Bisection